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arXiv 1105.4664hep-phastro-ph.HEhep-ex
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关于LSND和MiniBooNE反常的无菌中微子解释

On Sterile neutrino explanation of LSND and MiniBooNE anomalies

Claudio Dib, Juan Carlos Helo, Sergey Kovalenko, Ivan Schmidt

摘要:

我们研究现有的实验数据和最近提出的解释LSND和MiniBooNE异常,给出的无菌中微子$N$的衰变是由辐射模式为主的条款之间的兼容性。我们发现,目前的实验数据$τ\rightarrow μννγ$衰变是兼容的不育中微子参数所需的解释的异常,但$K\rightarrow μνγ$显示与这些参数的边缘张力。我们还提出了辐射$K$衰变的实验削减,可以更好地测试无菌中微子假设。最后,我们研究了这种不育中微子对$K\toμνe e$的贡献,发现如果$e^{+}e^{-}$对不变质量的实验切割可以从目前的145 MeV降低到40 MeV以下,对这个过程的测量将为LSND和MiniBooNE异常的不育中微子解释提供有力的检验。

英文摘要:

We examine the compatibility between existing experimental data and a recently proposed explanation of the LSND and MiniBooNE anomalies, given in terms of a sterile neutrino $N$ whose decay is dominated by a radiative mode. We find that current experimental data on $τ\rightarrow μννγ$ decays are compatible with the sterile neutrino parameters required for the explanation of the anomalies, but $K\rightarrow μνγ$ shows a marginal tension with those parameters. We also propose experimental cuts on radiative $K$ decays that could test the sterile neutrino hypothesis better. Finally, we study the contribution of this sterile neutrino to $K\toμνe e$, and find that measurements of this process would provide powerful tests for the sterile neutrino explanation of the LSND and MiniBooNE anomalies, if the experimental cut on the invariant mass of the $e^{+}e^{-}$ pair could be reduced from its current value of 145 MeV to a value below 40 MeV.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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